This is one of the most popular online physics based puzzle games found online. The game play is simply very entertaining. The option of creating your very own level makes the game even more popular. There are many levels and many locked levels in the game. Just like the name of the game hints, your main objective in the game is to remove the red blocks from the screen by clicking on them. As the levels progress, more different coloured blocks with different features come into play making the challenges even more puzzling. Use the mouse and least possible number of clicks to play the game.